Exotic nuclei with charm and bottom flavor

We discuss the possibility of existence of exotic nuclei containing charm and bottom mesons. We study the interaction between (D) over bar (B) mesons and nucleons from view of heavy quark symmetry, and derive the one pion exchange potentials. We apply these potentials to the two body system of (D) over bar (B) meson and nucleon N, and find there are possible stable bound states with spin J(P) = 1/2(-) and isospin I = 0. We find that the tensor interaction mixing (D) over bar N and (D) over bar* N (BN and B*N) plays an important role. We also qualitatively discuss the possible bound states of (D) over bar (B) meson and two nucleons.